Statements (51)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
Traffic control device
|
| gptkbp:alsoKnownAs |
Traffic signals
Stoplights Traffic lamps |
| gptkbp:canBe |
Automatically operated
Manually operated |
| gptkbp:color |
Green
Red Yellow |
| gptkbp:commonIn |
Urban areas
Suburban areas Some rural areas |
| gptkbp:component |
gptkb:Poles
Controller Sensors Timers Lamps Signal head |
| gptkbp:deployment |
gptkb:London
|
| gptkbp:failureMode |
All lights off
All lights on Flashing mode |
| gptkbp:greenLightMeans |
gptkb:Go
|
| https://www.w3.org/2000/01/rdf-schema#label |
Traffic Lights
|
| gptkbp:inventedBy |
gptkb:J._P._Knight
|
| gptkbp:maintenance |
Municipal authorities
Transport departments |
| gptkbp:mayInclude |
Arrows
Countdown timers Audible signals Pedestrian symbols |
| gptkbp:provides |
Electricity
|
| gptkbp:purpose |
Control flow of traffic
|
| gptkbp:redLightMeans |
Stop
|
| gptkbp:regulates |
Bicycles
Vehicles Pedestrians |
| gptkbp:relatedTo |
Urban planning
Traffic congestion Road safety |
| gptkbp:standardizedBy |
gptkb:Vienna_Convention_on_Road_Signs_and_Signals
|
| gptkbp:technology |
gptkb:LED
Incandescent bulbs Halogen bulbs |
| gptkbp:usedIn |
Pedestrian crossings
Railway crossings Road intersections |
| gptkbp:yearInstalled |
1868
|
| gptkbp:yellowLightMeans |
Caution
|
| gptkbp:bfsParent |
gptkb:Crystal_Sky
|
| gptkbp:bfsLayer |
6
|